I have a new iver Johnson hp-18 semi auto 12 gauge. It has had roughly 75 rounds through it to test function and then has been hanging out in the safe. It is a 2 3/4 to 3 inch chamber and it holds 5+1. So far it has cycled everything, even the cheap number 8 target loads. The stock has a push button detent button that allows the stock to come off and just have the pistol grip on it. It is pretty handy for stashing it in confined spaces. I’m asking for 225, If you are interested txt 972977407two. Meet up is in the Wylie area, I’m here for work so it needs to be fairly close to Wylie. Thanks for looking